Hi all. 
 

I'm pretty new to this (have alsways just used the modems that my providor have included) but have just had Gigabit fiber installed. To get that to work I  borrowed a netgear Nighthawk ac1900 from my  neighbor.  Now I have invested in a set of Deco x20 3 pack to cover the hole house (3floors). 
 

It's all setup and went easy, but there are to things Im uncertain about. 
 

1. If I plug the x20 directly to the wall box, there is no signal. I nede to hook the x20 up to the Nighthawk to get signal - is this correct? And if so, will the wifi the be wifi 6, when the Nighthawk dos not support this?

2. When I do a Speedtest in the TP app, I get download speed up to 850 mbps and upload at 750. When I test through ookla speedtest app, the speed is only 77/45??

Hope you can help answer these questions. 
 

Regards,

/Flexter